Cardable hydrophobic polypropylene fiber

D - Textiles – Paper – 06 – M

Patent

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Details

D06M 13/148 (2006.01) D04H 1/42 (2006.01) D06M 13/17 (2006.01) D06M 13/224 (2006.01) D06M 13/292 (2006.01) D06M 15/53 (2006.01) D06M 15/643 (2006.01) D06M 15/70 (2006.01)

Patent

CA 2069269

A method for treating the surface of hydrophobic polyolefin-containing fibers to improve their lubricity and antistatic properties comprises applying a liquid lubricating finish to the surface of an extruded polyolefin-containing fiber or filament, in which the finish is either (1) a polyol, (2) a water-soluble ester or polyester obtained by reacting the polyol with a fatty acid having up to 6 carbon atoms, or (3) a glycol obtained by reacting the polyol with ethylene oxide or a combination of ethylene oxide and propylene oxide, and then mechanically processing the fiber or filament, the finish providing lubricity for the processing operations and lacking sufficient lipophilic substituents to produce significant surfactant properties; and the use of the said finish.

Méthode pour traiter la surface de fibres renfermant des polyoléfine hydrophobes, afin d'améliorer leur pouvoir lubrifiant et leurs propriétés antistatiques. La méthode consiste à appliquer un fini lubrifiant liquide à la surface d'une fibre ou d'un filament extrudés renfermant une polyoléfine - le fini est soit (1) un polyol, soit (2) un ester ou un polyester hydrosoluble, obtenu par réaction du polyol avec un acide gras comptant jusqu'à 6 atomes de carbone, soit (3) un glycol obtenu par réaction du polyol avec de l'oxyde d'éthylène, ou une combinaison d'oxyde d'éthylène et d'oxyde de propylène -, puis à traiter mécaniquement la fibre ou le filament. Le fini donne le pouvoir lubrifiant pour les opérations de traitement, et il ne porte pas assez de substituants lipophiles pour générer des propriétés tensioactives significatives. Utilisation de ce fini.

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